$f_header = $top->Frame()->pack( side => 'top', -anchor => 'nw' );

$sp_list = $top->Scrolled(
    'Pane',
    -relief     => 'flat',
    -height     => 127,
    -scrollbars => 'se'
)->pack( -expand => 1, -fill => 'both', side => 'top', -pady => 4 );